The shoe bonus was for his rookie year. No bonus now.
Please watch a Cavs game and see how much Mo Williams helps this team. You won't find it all in the box score either, but the fact that Lebron trusts him to bring the ball up the court is huge. The fact that he scores points when Lebron is on the bench is even bigger (something that was incredibly difficult to come by last year). The casv now are completely different than the cCavs that played Boston to open the season.
Like I said, Ferry isn't going to trade Wally for anything but an all star caliber player. He is far past the panic he was in when he first came to Cleveland and was trying to get some kind of talent to keep Lebron here.
The cavs are trying to win now but they aren't going to mortgage the future for a marginal player with a huge salary.